Skip to main content
USAvizUSAviz

Local data snapshots and weekly insights for every place in America.

Explore

  • Insights
  • Search
  • Browse states
  • Browse metros

Company

  • About
  • Methodology
  • Sources
  • Embed Our Data
  • Contact
Privacy·Terms·Do Not Sell or Share

© 2026 USAviz.com. All rights reserved.

USAvizUSAviz
Insights
About
Home
323
  1. Home
  2. Area Codes
  3. Area code 323
California (CA)Pacific Time (PT)

Area Code 323

California (CA) * Los Angeles, Bell Gardens, Huntington Park, Maywood, Montebello, South Gate, South Pasadena * Pacific Time (PT)

2.4M

Population

60

ZIP codes

California

Primary state

Pacific Time (PT)

Time zones

What stands out

  • Coverage: 2.4M people across 60 ZIP codes (primarily Los Angeles County, CA).
  • Overlapping area codes: 213
  • Major cities: Los Angeles, Bell Gardens, Huntington Park.
Primary state:California (CA)/Major cities:Los Angeles, Bell Gardens, Huntington Park, Maywood, Montebello, South Gate, South Pasadena/Overlays:213, 738

Browse sections

Basics

Percentiles compare this area code to other area codes nationwide.

Population

2.4M

ZIP codes

60

Median age

35.8 yrs

Population density

12.4K/sq mi

Mean commute time

32 min

Avg. household size

3

Neighbors

Neighboring area codes

310424562626747818
Notes & Sources
  • Area-code boundaries can change over time; verify official assignments with NANPA for critical use.
  • In regions with overlapping area codes, new numbers may use a different code.
  • This page aggregates ZIP-based crosswalks for orientation and does not indicate phone-number availability.

Data freshness

ACS 5-year
2020–2024
Page updated
2026-02-23

Release schedule and upstream dates: Sources.

Data sources

U.S. Census (ACS 5-year)U.S. Census TIGER/LineNANPA

Derived statistics

  • Area codes are not Census geographies; statistics are estimated by aggregating ZCTA (ZIP) values for associated ZIPs.
  • ZIP↔area code associations are derived from NPA boundary polygons and ZCTA centroid points, and can be approximate.
  • Median age, mean commute, and household size are population-weighted; population density uses summed ZIP land area.
Area code overlays and service areas are primarily governed by NANPA; this page uses aggregated geographic overlays for orientation only.

Data accuracy & methodology

This report aggregates 2020–2024 ACS 5-year estimates and geographic overlays for orientation. Area code service areas can cross ZIP/state boundaries and change over time; verify official assignments with NANPA for critical use.